#!/bin/sh -efu
#
# find-debuginfo-files - make %files list for debuginfo package
#
# Written by Alexey Tourbin <at@altlinux.org>.
# License: GPLv2+.

. @RPMCONFIGDIR@/functions
ValidateBuildRoot

cd "$RPM_BUILD_ROOT"

rm -rf .tmp
mkdir .tmp

>.tmp/files
>.tmp/files-can
>.tmp/links
>.tmp/links-in
>.tmp/src

while read -r f; do
	f=${f#$RPM_BUILD_ROOT}

	[ -n "$f" ] || continue

	if [ -z "${f##/boot/vmlinuz-*}" ]; then
		# Redirect to vmlinux saved by debuginfo.brp into debug tree's
		# %modules_dir.
		kver=${f#/boot/vmlinuz-}
		f=/usr/lib/debug/lib/modules/$kver/vmlinux
		if [ -e ".$f" ]; then
			printf '%s\n' "$f" >> .tmp/files
		else
			Warning "Expected $f not found."
		fi
	fi
	fbin=$f # Actual binary for linking

	if [ -z "${f#/lib/modules/*.ko.[gx]z}" ]; then
		# For gzipped modules actual binary is kept in debug tree
		# (placed by debuginfo.brp) and goes into -debuginfo package.
		f=${f%.[gx]z}
		fbin=/usr/lib/debug$f
		if [ -e ".$fbin" ]; then
			printf '%s\n' "$fbin" >> .tmp/files
		else
			Warning "Expected $fbin not found."
		fi
	fi

	if [ -f .debuginfo/src/"$f" ]; then
		LC_ALL=C sort -m -u -o .tmp/src .tmp/src .debuginfo/src/"$f"
	fi

	debugf=./usr/lib/debug$f.debug
	[ -f "$debugf" ] || continue
	if [ -L "$debugf" ]; then
		# Save symlink for later filtering.
		printf '%s\n' "$debugf" >> .tmp/links-in
		continue
	fi
	printf '%s\n' "${debugf#.}" >> .tmp/files

	# Save canonical file name for later symlinks filtering.
	readlink -ve "$debugf" >> .tmp/files-can

	id=$(debugedit -n -i "$debugf")
	[ -n "$id" ] || continue

	link=./usr/lib/debug/.build-id/${id:0:2}/${id:2}
	if [ ! -L "$link" ]; then
		mkdir -p "${link%/*}"
		ln -snf "$(relative "$fbin" "${link#.}")" "$link"
		ln -snf "$(relative "${debugf#.}" "${link#.}".debug)" "$link".debug
	fi
	to=$(readlink -vm "$link")
	if [ "$to" = "$RPM_BUILD_ROOT$fbin" ]; then
		printf '%s\n' "${link#.}" >> .tmp/links
		printf '%s\n' "${link#.}".debug >> .tmp/links
	fi
done

# Filter out symlinks pointing out of the package.
sort -u .tmp/links-in |
while read -r link; do
	to=$(readlink -vm "$link")
	if grep -Fqsxe "$to" .tmp/files-can; then
		printf '%s\n' "${link#.}" >> .tmp/links
	fi
done

sed 's|\(.*\)/.*|\1|' .tmp/files .tmp/links .tmp/src |sort -u |
while read -r dir; do
	while [ -n "$dir" ]; do
		case $dir in
			/usr/lib/debug/usr/*/*)
				printf '%s\n' "$dir" ;;
			/usr/lib/debug/usr/*)
				break ;;
			/usr/lib/debug/*/*)
				printf '%s\n' "$dir" ;;
			/usr/lib/debug/*)
				break ;;
			/usr/src/debug/*)
				printf '%s\n' "$dir" ;;
			*)
				break ;;
		esac
		dir=${dir%/*}
	done
done |
sort -u |
sed 's/^/%dir /'

# Filter out directories from debugedit src list file.
grep -v '/$' < .tmp/src > .tmp/src-files ||:

sort .tmp/files .tmp/links .tmp/src-files
